We compared our global photometric parameters
in Gunn r with those from JFK95a.
We have 14 galaxies in common,
cf. Sect. (p. ).
We calculate the differences as ``our''-``JFK95a''.
The result is shown in Table ,
and in Fig. and .
The agreement is very good for 11 of the 14 galaxies.
For R269, R338, and R343 the agreement is less good.
These galaxies have been marked in some of the plots.
Even for all 14 galaxies, no systematic differences are seen,
and the derived typical external uncertainties (rms/)
are low.
In other words, our global photometric parameters are of very good quality.
Note, however, that JFK95a used the same methods to derive global
parameters as we did.
We therefore expect a priori that the agreement with JFK95a is better
than with authors that use completely different methods.

The correlation of the errors in
and
is shown in Fig. .
The linear correlation coefficient is r = 0.94.